Unreal Engine Issues

Significant Refraction Differences between 4.27 and 5.0

Panning in blueprints does not appear to be affect by windows pointer speed

The windows mouse speed settings appear to have no effect on the panning speed in blueprint. ...

Using Start Players as Spectators checkbox does not affect Player0

When setting up a custom game mode blueprint, if the "Start Players as Spectators" checkbox is checked the first player loaded in PIE will not be in spectator mode. ...

Level sequence attachment dirtying bugs - 5.4

Level Sequences can mark the level they are in as modified without modifying them, as well as get themselves into a state where they modified themselves when saved. ...

Sound Mix Modifiers do not properly affect Sound Class

Sound mixers do not properly override variables within a sound class. This prevents users from being able to modify variables such as volume or pitch quickly and efficiently by using the push/pop st ...

[MetaSounds] The Members' detail panel does not accurately update after making an edit and selecting a different member

Note: This issue also affects MetaSound Patches and any Members Menu List Repro Rate: 5/5 Regression marked as No: issue was seen in 5.2 and 5.1  UE5+Release-5.2-CL-26001984 UE5+Release-5.1-CL- ...

Unreal Insights - GPU Timers don't show on Graph

From Customer: UE 5.3 update broke Unreal Insights adding GPU timers into graph tracks. Debugging the code and cross checking with github/p4v I guess it broke in this revision: Timer graphs no ...

Blurry RVTs after camera jump

When using Runtime Virtual Textures (RVT) on landscape in UE 5.5+, nearby tiles may remain blurry (low-resolution mips) after launching PIE or making large camera jumps (e.g. via bookmarks or viewpo ...

ResavePackages Commandlet Consistently Crashes in 5.3 In Material PreSave

Running the ResavePackages commandlet will consistently result in a crash. The callstack is here: Assertion failed: !IsRooted() [Link Removed] [Line: 265] UnrealEditor_Engine!UMaterialInterface::P ...

Changes to Instanced Properties default value on BP not propagated to placed actors in the opened level

In UE versions 5.4 and onwards (as of CL 42589677 in Main), when an Instanced UObject property is defined in an Actor Blueprint, modifying the default value in the Blueprint does not propagate the c ...